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Aberrant imprinting may underlie evolution of parthenogenesis.

ABSTRACT: Genomic imprinting confers parent-of-origin-specific gene expression, thus non-equivalent and complementary function of parental genomes. As a consequence, genomic imprinting poses an epigenetic barrier to parthenogenesis in sexual organisms. We report aberrant imprinting in Boechera, a genus in which apomicts evolved from sexuals multiple times. Maternal activation of a MADS-box gene, a homolog of which is imprinted and paternally expressed in the sexual relative Arabidopsis, is accompanied by locus-specific DNA methylation changes in apomicts where parental imprinting seems to be relaxed.

SUBMITTER: Kirioukhova O

PROVIDER: S-EPMC6045609 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Aberrant imprinting may underlie evolution of parthenogenesis.

Kirioukhova Olga O Shah Jubin N JN Larsen Danaé S DS Tayyab Muhammad M Mueller Nora E NE Govind Geetha G Baroux Célia C Federer Michael M Gheyselinck Jacqueline J Barrell Philippa J PJ Ma Hong H Sprunck Stefanie S Huettel Bruno B Wallace Helen H Grossniklaus Ueli U Johnston Amal J AJ

Scientific reports 20180713 1

Genomic imprinting confers parent-of-origin-specific gene expression, thus non-equivalent and complementary function of parental genomes. As a consequence, genomic imprinting poses an epigenetic barrier to parthenogenesis in sexual organisms. We report aberrant imprinting in Boechera, a genus in which apomicts evolved from sexuals multiple times. Maternal activation of a MADS-box gene, a homolog of which is imprinted and paternally expressed in the sexual relative Arabidopsis, is accompanied by ...[more]

PMID: 30006526

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